[Tfug] Hotplugging, (Was The 3.5.7 kernel)

[Bexley Hall]

Hi Erich,

On 3/24/2013 11:25 PM, erich wrote:
> The more I look at this problem, the more I think
> that it cannot be solved remotely.
>
> You see, I'm trying to troubleshoot this machine over
> my LAN, and in a world without HAL that may not
> be possible.

How are you simulating hotplug events?  (or, is the
LAN just a physical medium you are using to connect
to a machine "within arm's reach"?)

> This new machine of mine runs a command I've never
> seen before:
>
> rose ~ # ck-list-sessions
> Session3:
> unix-user = '1000'
> realname = '(null)'
> seat = 'Seat1'
> session-type = ''
> active = TRUE
> x11-display = ''
> x11-display-device = ''
> display-device = '/dev/tty1'
> remote-host-name = ''
> is-local = TRUE
> on-since = '2013-03-25T05:40:28.222196Z'
> login-session-id = '3'
> idle-since-hint = '2013-03-25T05:40:59.462669Z'
> Session1:
> unix-user = '1000'
> realname = '(null)'
> seat = 'Seat2'
> session-type = ''
> active = FALSE
> x11-display = ''
> x11-display-device = ''
> display-device = '/dev/pts/0'
> remote-host-name = 'nec0.fgi.com'
> is-local = FALSE
> on-since = '2013-03-25T01:46:00.467187Z'
> login-session-id = '1'
> idle-since-hint = '2013-03-25T01:50:08.478465Z'
> Session2:
> unix-user = '1000'
> realname = '(null)'
> seat = 'Seat3'
> session-type = ''
> active = FALSE
> x11-display = ''
> x11-display-device = ''
> display-device = '/dev/pts/1'
> remote-host-name = 'mmom.fgi.com'
> is-local = FALSE
> on-since = '2013-03-25T02:56:25.374772Z'
> login-session-id = '2'
> idle-since-hint = '2013-03-25T05:33:56.466456Z'
>
> I'm working on this box from Session2
>
> 'is-local = TRUE' and
> apparently
> x11-display-device = '/dev/tty7'
>
> must be present in the session before hotplugging will work
> has anyone else seen this command?

How have you determined this?  I.e., I can understand the
rationale behind "is-local" but imagine x11-display-device is
just a coincidence; a consequence of your use of a GUI to
interact with the system (instead of, for example, a
regular "text" console).

[Or, is it not possible to run a login session *without* X?]